CN112396963A - Foldable display module and device - Google Patents
Foldable display module and device Download PDFInfo
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- CN112396963A CN112396963A CN202011279734.XA CN202011279734A CN112396963A CN 112396963 A CN112396963 A CN 112396963A CN 202011279734 A CN202011279734 A CN 202011279734A CN 112396963 A CN112396963 A CN 112396963A
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- substrate
- display module
- foldable display
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The application provides a foldable display module and a device, wherein the foldable display module comprises a bending area, and the foldable display module comprises a first substrate, a flexible backboard arranged on the first substrate, a flexible display panel arranged on the flexible backboard, a polaroid arranged on the flexible display panel and a second substrate arranged on the polaroid; the second substrate is made of ultrathin flexible glass, and is provided with a first hollow pattern in the bending area; the material through with the second base plate sets up to ultra-thin flexible glass for the second base plate possesses better light transmissivity, heat resistance and surface hardness, thereby can be fine prevent by the scratch, and, also can be fine avoid collapsible display module assembly produce the problem that the rete peels off or the fold in folding process, in addition, set up first fretwork pattern on the second base plate, further improved the strain capacity of second base plate in the bending zone.
Description
Technical Field
The application relates to the field of display, in particular to a foldable display module and a device.
Background
A static Organic Light Emitting Diode (OLED) display uses glass as a substrate, which can prevent water and oxygen from entering the panel to corrode the circuit, but the conventional glass substrate is a rigid material and is not suitable for use in a flexible display device. At present, flexible materials such as Polyethylene terephthalate (PET) and Polyimide (PI) are generally used as a substrate, wherein although the PET material has high light transmittance, the PET material is easily subjected to plastic deformation and difficult to recover to an original state to generate wrinkles after being bent for a plurality of times, and the PI film has advantages such as low bending radius and durability, but the PI film has low transparency, plastic feeling, easy scratching and difficult to be hardened by surface hardening treatment.
Disclosure of Invention
An object of the present application is to provide a foldable display module and a device thereof, which are used to solve the technical problems of low substrate hardness, easy scratch, and easy peeling or wrinkling during the folding process of the foldable display module.
In order to solve the above problem, the present application provides a foldable display module, including the bending zone, the foldable display module includes:
the flexible backboard comprises a first substrate, a second substrate and a third substrate, wherein the first substrate is provided with a flexible backboard;
a flexible display panel disposed on the flexible backplane;
the polaroid is arranged on the flexible display panel;
the second substrate is arranged on the polarizer;
the second substrate is made of ultrathin flexible glass, and first hollow patterns located in the bending area are arranged on the second substrate.
In the foldable display module provided by the embodiment of the application, the first substrate is made of ultrathin flexible glass, and the first substrate is provided with a second hollow pattern located in the bending area.
In the collapsible display module assembly that this application embodiment provided, collapsible display module assembly is including being located folding axis in the bending zone, first fretwork pattern with second fretwork pattern all includes a plurality of fretwork groove sets collapsible display module assembly is under the fold condition, each fretwork groove set all extends along first direction, first direction with folding axis is perpendicular.
In the foldable display module provided in the embodiment of the present application, each of the hollow groove sets includes a first wavy hollow groove, and the first wavy hollow grooves extend along the first direction and are parallel to each other.
In the foldable display module provided by the embodiment of the application, the distances between every two adjacent wavy hollow-out grooves are equal.
In the foldable display module provided by the embodiment of the application, each hollowed-out groove group comprises two second wavy hollowed-out grooves extending in the first direction, the second wavy hollowed-out grooves are symmetrically arranged, and the symmetry axes of the second wavy hollowed-out grooves are parallel to the first direction.
In the foldable display module provided by the embodiment of the application, each hollowed-out groove group comprises a plurality of S-shaped hollowed-out grooves which are sequentially arranged along the first direction.
In the foldable display module provided by the embodiment of the application, a first adhesive layer is arranged between the polarizer and the second substrate, and the first adhesive layer comprises a first adhesive body and a first filling part filled in the first hollow pattern.
In the foldable display module provided by the embodiment of the application, a second bonding layer is arranged between the first substrate and the flexible back plate, and the second bonding layer comprises a second bonding body and a second filling part filled in the second hollow pattern.
The application also provides a foldable display device, which comprises the foldable display module.
The beneficial effects of this application do, set up to ultra-thin flexible glass through the material with the second base plate for the second base plate possesses better light transmissivity, heat resistance and surface hardness, thereby can be fine prevent by the scratch, and, the foldable display module assembly of avoiding that also can be fine produces the problem that the rete is peeled off or the fold at folding in-process, in addition set up first fretwork pattern on the second base plate, further improved the strain capacity of second base plate in the bending zone.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a first structural diagram of a foldable display module according to an embodiment of the present disclosure;
FIG. 2 is a second structural diagram of a foldable display module according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of a first structure of a second substrate according to an embodiment of the present disclosure;
FIG. 4 is a second structural diagram of a second substrate according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of a third structure of a second substrate according to an embodiment of the present disclosure;
FIG. 6 is a schematic view of a first structure of a first substrate according to an embodiment of the present disclosure;
FIG. 7 is a second structural diagram of a first substrate according to an embodiment of the present disclosure; and
fig. 8 is a schematic view of a third structure of the first substrate in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The technical solution of the present application will now be described with reference to specific embodiments.
The present application provides a foldable display module, as shown in fig. 1 to 5, including a bending region 100, the foldable display module includes:
the display device comprises a first substrate 10, wherein a flexible back plate 20 is arranged on the first substrate 10;
a flexible display panel 30 disposed on the flexible backplane 20;
a polarizer 40 disposed on the flexible display panel 30;
a second substrate 50 disposed on the polarizer 40;
the second substrate 50 is made of ultra-thin flexible glass, and the second substrate 50 is provided with a first hollow pattern 51 located in the bending region 100.
It can be understood that, at present, in the flexible display module, a flexible material such as PET, PI, etc. is generally used as a substrate, wherein although the PET material has high light transmittance, it is easy to generate plastic deformation and difficult to recover to the original state to generate wrinkles after being bent for multiple times, and the PI film has advantages of low bending radius, durability, etc., but the PI film has low transparency, plastic feeling, easy scratching, and relatively difficult to be hardened by surface hardening treatment, in this embodiment, Ultra-Thin flexible Glass (UTG) has better light transmittance, heat resistance, and surface hardness than a polymer material because the physical properties of Glass are retained, and meanwhile, the density of the Ultra-Thin flexible Glass is much less than that of a metal plate material, and the second substrate 50 has better light transmittance, heat resistance, and surface hardness because the material of the second substrate 50 is made of the Ultra-Thin flexible Glass, The heat resistance and the surface hardness can well prevent scratches, the quality of the second substrate 50 can be reduced, the effect of reducing the weight of the whole device can be achieved, the problem that a film layer is peeled or wrinkled in the folding process of the foldable display module can be well avoided, and in addition, the first hollow pattern 51 is arranged on the second substrate 50, so that the strain capacity of the second substrate 50 in the bending area 100 is further improved.
In an embodiment, as shown in fig. 1 to 2 and 6 to 8, the first substrate 10 is made of ultra-thin flexible glass, and the first substrate 10 is provided with a second hollow pattern 11 located in the bending region 100; it can be understood that, at present, the first substrate 10 is usually made of a material such as SUS steel, which severely limits the change of the bending shape of the foldable display module and is also easy to cause the problem of functional layer peeling, in this embodiment, the material of the first substrate 10 is set to be ultra-thin flexible glass, so that the first substrate 10 has better light transmittance, heat resistance and surface hardness, and thus can be well prevented from being scratched, and the problem of film layer peeling or wrinkling generated during the folding process of the foldable display module can also be well avoided, and in addition, the second hollow pattern 11 is arranged on the first substrate 10, which further improves the strain capacity of the first substrate 10 in the bending region 100.
In an embodiment, as shown in fig. 3 to 8, each of the second hollow pattern 11 and the first hollow pattern 51 includes a plurality of hollow groove sets 200, and each of the hollow groove sets 200 extends along a first direction 300 when the foldable display module is in an unfolded state, where the first direction 300 is parallel to the flexible display panel 30; it can be understood that the second hollow pattern 11 and the first hollow pattern 51 each include a plurality of hollow groove sets 200, each hollow groove set 200 is located in the bending region 100, in the second hollow pattern 11, each hollow groove group 200 divides the portion of the first substrate 10 located in the bending region 100 into a plurality of strip-shaped structures, so that the portion of the first substrate 10 in the bending region 100 can be prevented from generating large stress and reducing the bending strength, and obviously, in the first hollow pattern 51, each hollow groove group 200 divides the portion of the second substrate 50 located in the bending region 100 into a plurality of strip-shaped structures, therefore, the second substrate 50 in the bending region 100 can be prevented from generating a large stress to reduce the bending strength, and in addition, in this embodiment, the thicknesses of the first substrate 10 and the second substrate 50 are both 0.1 mm.
It should be noted that the smaller the distance between two adjacent hollow groove sets 200 is, the better the bending performance of the first substrate 10 and the second substrate 50 in the bending region 100 is; in addition, in a top view, the edges of the hollowed-out shapes in each hollowed-out groove group 200 are curved, so that the stress applied to the first substrate 10 and the second substrate 50 during the bending process can be well dispersed.
In one embodiment, as shown in fig. 3 to 8, the foldable display module comprises a folding axis 110 located in the bending region 100, and the first direction 300 is perpendicular to the folding axis 110; it can be understood that the first direction 300 extending by each hollow groove group 200 is set to be perpendicular to the folding axis 110, so as to maximize the sufficient strain capacity and fulcrum reaction force of the first substrate 10 and the second substrate 50 when folded. Of course, the first direction 300 may be disposed at other angles with respect to the folding axis 110, and will not be described herein.
In one embodiment, as shown in fig. 3 and fig. 6, each of the groove sets 200 includes a first wavy groove 210, and the first wavy grooves 210 extend along the first direction 300 and are parallel to each other; it can be understood that each of the hollow groove sets 200 is configured to include one first wavy hollow groove 210, in the second hollow pattern 11, each of the first wavy hollow grooves 210 divides the portion of the first substrate 10 located in the bending region 100 into a plurality of long strip-shaped structures in a wavy shape, so that the portion of the first substrate 10 located in the bending region 100 can be prevented from generating a large stress and reducing the bending strength, and obviously, in the first hollow pattern 51, each of the first wavy hollow grooves 210 divides the portion of the second substrate 50 located in the bending region 100 into a plurality of long strip-shaped structures, so that the portion of the second substrate 50 located in the bending region 100 can be prevented from generating a large stress and reducing the bending strength. In this embodiment, the distances between every two adjacent wave-shaped hollowed-out grooves are equal, and the distances between every two adjacent wave-shaped hollowed-out grooves are equal, so that the second hollowed-out patterns 11 and the first hollowed-out patterns 51 have better uniformity, the performance of bearing stress strain integrally is balanced, the problem that stress at a single position is easily concentrated or the anti-bending performance is poor is solved, wrinkles are not easily generated in the multiple folding process, and the peeling phenomenon is more conveniently prevented.
In an embodiment, as shown in fig. 4 and fig. 7, each of the hollow groove sets 200 includes two second wavy hollow grooves 220 extending along the first direction 300, the two second wavy hollow grooves 220 are symmetrically arranged, and the symmetry axes 221 of the two second wavy hollow grooves 220 are parallel to the first direction 300; it can be understood that, in one set of the hollow groove group 200, two second wavy hollow grooves 220 extending along the first direction 300 are included, and the two second wavy hollow grooves 220 are symmetrically arranged, obviously, the two second wavy hollow grooves 220 have different distances at different positions, and the two second wavy hollow grooves 220 are not communicated, so that the first substrate 10 or the second substrate 50 is divided into a long strip structure with a curved edge by the structural form, and the curves at two sides of any one of the long strip structures are symmetrical and have different bending directions, which is more convenient for dispersing and releasing the bending stress, and avoids generating the stress concentration phenomenon to reduce the bending strength of the first substrate 10 and the second substrate 50.
In an embodiment, as shown in fig. 5 and 8, each of the hollow groove sets 200 includes a plurality of S-shaped hollow grooves 230 sequentially arranged along the first direction 300; it can be understood that, in one of the hollow groove groups 200, each of the S-shaped hollow grooves 230 is sequentially arranged, and two adjacent S-shaped hollow grooves 230 may be communicated or disposed at intervals, in this embodiment, the S-shaped hollow grooves 230 may be disposed according to actual requirements, specifically, the S-shaped hollow grooves 230 may include a long axis with a longer distance between two ends of the S-shaped hollow grooves 230, and the long axis is parallel to the first direction 300.
In an embodiment, as shown in fig. 1, a first adhesive layer 60 is disposed between the polarizer 40 and the second substrate 50, and the first adhesive layer 60 includes a first adhesive body and a first filling portion (not shown) filled in the first hollow pattern 51; it is understood that the polarizer 40 and the second substrate 50 are adhesively fixed by the first Adhesive layer 60, and the first Adhesive layer 60 is configured to include a first Adhesive body and a first filling portion filled in the first hollow pattern 51, the first Adhesive layer 60 may be an Adhesive material such as optical Adhesive (OCA), obviously, the Adhesive material has different mechanical properties from the material of the second substrate 50, so as to achieve a good complementary effect, and improve the mechanical property of the second substrate 50 against bending fatigue as a whole, and as shown in fig. 2, a first protective layer 70 may be disposed on a side of the second substrate 50 away from the first Adhesive layer 60, the first protective layer 70 at least covers the first hollow pattern 51, the material of the first protective layer 70 may be a thermoplastic polyurethane elastomer rubber (TPU, thermoplastic polyurethanes), and the thickness of the first protective layer 70 may be 35 um; in addition, a third adhesive layer 81 is further disposed between the polarizer 40 and the flexible display panel 30.
In an embodiment, as shown in fig. 1, a second adhesive layer 80 is disposed between the first substrate 10 and the flexible backplane 20, and the second adhesive layer 80 includes a second adhesive body and a second filling portion (not shown) filled in the second hollow pattern 11; it is understood that, the flexible backplane 20 and the first substrate 10 are adhesively fixed by the second adhesive layer 80, the second adhesive layer 80 is provided to include a second adhesive body and a second filling portion filled in the second hollow pattern 11, the second adhesive layer 80 may be an adhesive material such as OCA, and obviously, the adhesive material has mechanical properties different from that of the material of the first substrate 10, a good complementary action can be achieved, the mechanical properties of the first substrate 10 against bending fatigue as a whole are improved, and in addition, as shown in fig. 2, a second protective layer 90 may be disposed on a side of the first substrate 10 away from the second adhesive layer 80, the second protection layer 90 at least covers the second hollow pattern 11, the material of the second protection layer 90 may be TPU, and the thickness of the second protection layer 90 may be 35 um.
The present application further provides a foldable display device, which includes the foldable display module described above, and the structure of the foldable display module can be found in the foregoing embodiments, which are not described herein again.
The application provides a collapsible display module assembly sets up to ultra-thin flexible glass through the material with second base plate 50 for second base plate 50 possesses better light transmissivity, heat resistance and surface hardness, thereby can be fine prevent by the scratch, and, the problem that the collapsible display module assembly of avoiding that also can be fine produced rete and peels off or the fold in folding process, in addition set up first fretwork pattern 51 on the second base plate 50, further improved the strain capacity of second base plate 50 in bending area 100.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above embodiments of the present application are described in detail, and specific examples are applied in the present application to explain the principles and implementations of the present application, and the description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. The utility model provides a collapsible display module assembly, includes the bending zone, its characterized in that, collapsible display module assembly includes:
the flexible backboard comprises a first substrate, a second substrate and a third substrate, wherein the first substrate is provided with a flexible backboard;
a flexible display panel disposed on the flexible backplane;
the polaroid is arranged on the flexible display panel;
the second substrate is arranged on the polarizer;
the second substrate is made of ultrathin flexible glass, and first hollow patterns located in the bending area are arranged on the second substrate.
2. The foldable display module of claim 1, wherein the first substrate is made of ultra-thin flexible glass, and the first substrate is provided with a second hollow pattern in the bending region.
3. The foldable display module of claim 2, wherein the foldable display module comprises a folding axis located in the bending region, and the first and second hollow patterns each comprise a plurality of hollow groove sets, and each of the hollow groove sets extends along a first direction perpendicular to the folding axis when the foldable display module is in an unfolded state.
4. The foldable display module of claim 3, wherein each of the sets of slots comprises a first wavy slot, and the first wavy slots extend along the first direction and are parallel to each other.
5. The foldable display module of claim 4, wherein the spacings between two adjacent wavy hollow-outs are equal.
6. The foldable display module of claim 3, wherein each of the sets of hollow-out grooves comprises two second wavy hollow-out grooves extending along the first direction, and the two second wavy hollow-out grooves are symmetrically arranged, and the symmetry axis of the two second wavy hollow-out grooves is parallel to the first direction.
7. The foldable display module of claim 3, wherein each of the sets of hollowed-out grooves comprises a plurality of S-shaped hollowed-out grooves arranged in sequence along the first direction.
8. The foldable display module of claim 1, wherein a first adhesive layer is disposed between the polarizer and the second substrate, and the first adhesive layer comprises a first adhesive body and a first filling portion filled in the first hollow pattern.
9. The foldable display module of claim 2, wherein a second adhesive layer is disposed between the first substrate and the flexible backplane, and the second adhesive layer comprises a second adhesive body and a second filling portion filled in the second hollow pattern.
10. A foldable display device, comprising the foldable display module of any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279734.XA CN112396963A (en) | 2020-11-16 | 2020-11-16 | Foldable display module and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011279734.XA CN112396963A (en) | 2020-11-16 | 2020-11-16 | Foldable display module and device |
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| CN112396963A true CN112396963A (en) | 2021-02-23 |
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| CN202011279734.XA Pending CN112396963A (en) | 2020-11-16 | 2020-11-16 | Foldable display module and device |
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| CN113112915A (en) * | 2021-03-31 | 2021-07-13 | 上海天马微电子有限公司 | Protective film, manufacturing method of protective film, display panel and display device |
| CN113888983A (en) * | 2021-11-01 | 2022-01-04 | 合肥维信诺科技有限公司 | Cover plate and flexible display module |
| CN114373391A (en) * | 2022-01-11 | 2022-04-19 | 武汉华星光电半导体显示技术有限公司 | Foldable display module |
| CN114842747A (en) * | 2022-04-11 | 2022-08-02 | 昆山国显光电有限公司 | Flexible cover plate, flexible display screen and electronic equipment |
| CN114842755A (en) * | 2022-05-31 | 2022-08-02 | 湖北长江新型显示产业创新中心有限公司 | Supporting plate, display module and display device |
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| CN115701703A (en) * | 2021-08-02 | 2023-02-10 | 华为技术有限公司 | Foldable equipment and protective device |
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| CN114842747A (en) * | 2022-04-11 | 2022-08-02 | 昆山国显光电有限公司 | Flexible cover plate, flexible display screen and electronic equipment |
| CN114842747B (en) * | 2022-04-11 | 2024-04-26 | 昆山国显光电有限公司 | Flexible cover plate, flexible display screen and electronic equipment |
| CN114913773A (en) * | 2022-05-11 | 2022-08-16 | 武汉华星光电半导体显示技术有限公司 | Foldable display panel |
| CN114913773B (en) * | 2022-05-11 | 2023-11-28 | 武汉华星光电半导体显示技术有限公司 | Foldable display panel |
| CN114842755A (en) * | 2022-05-31 | 2022-08-02 | 湖北长江新型显示产业创新中心有限公司 | Supporting plate, display module and display device |
| CN114842755B (en) * | 2022-05-31 | 2023-10-27 | 湖北长江新型显示产业创新中心有限公司 | Support plate, display module and display device |
| WO2023236302A1 (en) * | 2022-06-10 | 2023-12-14 | 武汉华星光电半导体显示技术有限公司 | Flexible display apparatus |
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